Maxima Function
einstein (dis)
A function in the ctensor (component tensor)
package. einstein computes the mixed Einstein tensor
after the Christoffel symbols and Ricci tensor have been obtained
(with the functions christof and ricci). If the argument dis is
true, then the non-zero values of the mixed Einstein tensor ein[i,j]
will be displayed where j is the contravariant index.
The variable rateinstein will cause the rational simplification on
these components. If ratfac is true then the components will
also be factored.